/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:29:40,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:29:40,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:29:40,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:29:40,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:29:40,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:29:40,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:29:40,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:29:40,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:29:40,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:29:40,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:29:40,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 05:29:40,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:29:40,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:29:40,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:29:40,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:29:40,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:29:40,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:29:40,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:29:40,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:29:40,678 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:29:40,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:29:40,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:29:40,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:29:40,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:29:40,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:29:40,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:29:40,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:29:40,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:29:40,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:29:40,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:29:40,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:29:40,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:29:40,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:29:40,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:29:40,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:29:40,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:29:40,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:29:40,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:29:40,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:29:40,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:29:40,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:29:41,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:29:41,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:29:41,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:29:41,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:29:41,093 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:29:41,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-22 05:29:41,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ccef9a1/22144a2578a54792a360bb8318bf9858/FLAG5cfeeb60a [2020-12-22 05:29:41,768 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:29:41,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-22 05:29:41,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ccef9a1/22144a2578a54792a360bb8318bf9858/FLAG5cfeeb60a [2020-12-22 05:29:42,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ccef9a1/22144a2578a54792a360bb8318bf9858 [2020-12-22 05:29:42,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:29:42,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:29:42,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:29:42,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:29:42,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:29:42,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0c57f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42, skipping insertion in model container [2020-12-22 05:29:42,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:29:42,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:29:42,362 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] [2020-12-22 05:29:42,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:29:42,392 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:29:42,407 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] [2020-12-22 05:29:42,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:29:42,438 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:29:42,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42 WrapperNode [2020-12-22 05:29:42,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:29:42,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:29:42,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:29:42,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:29:42,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:29:42,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:29:42,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:29:42,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:29:42,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... [2020-12-22 05:29:42,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:29:42,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:29:42,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:29:42,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:29:42,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:29:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:29:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:29:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:29:42,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:29:43,085 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:29:43,088 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 05:29:43,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:29:43 BoogieIcfgContainer [2020-12-22 05:29:43,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:29:43,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:29:43,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:29:43,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:29:43,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:29:42" (1/3) ... [2020-12-22 05:29:43,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e22e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:29:43, skipping insertion in model container [2020-12-22 05:29:43,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:29:42" (2/3) ... [2020-12-22 05:29:43,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e22e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:29:43, skipping insertion in model container [2020-12-22 05:29:43,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:29:43" (3/3) ... [2020-12-22 05:29:43,114 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2020-12-22 05:29:43,120 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:29:43,125 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:29:43,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:29:43,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:29:43,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:29:43,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:29:43,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:29:43,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:29:43,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:29:43,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:29:43,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:29:43,196 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:29:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:29:43,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:43,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:43,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:43,210 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-22 05:29:43,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:43,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481345351] [2020-12-22 05:29:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:43,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481345351] [2020-12-22 05:29:43,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:43,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:29:43,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505115992] [2020-12-22 05:29:43,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:29:43,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:43,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:29:43,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:29:43,420 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:29:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:43,442 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-22 05:29:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:29:43,444 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:29:43,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:43,478 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:29:43,478 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:29:43,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:29:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:29:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:29:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:29:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:29:43,536 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-22 05:29:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:43,536 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:29:43,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:29:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:29:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:29:43,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:43,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:43,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:29:43,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:43,545 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:29:43,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:43,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807825774] [2020-12-22 05:29:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:43,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807825774] [2020-12-22 05:29:43,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:43,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:29:43,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398356238] [2020-12-22 05:29:43,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:29:43,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:29:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:29:43,667 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:29:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:43,787 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-22 05:29:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:29:43,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:29:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:43,790 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:29:43,790 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:29:43,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:29:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:29:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-22 05:29:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:29:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:29:43,799 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:29:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:43,800 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:29:43,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:29:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:29:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:29:43,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:43,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:43,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:29:43,801 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-22 05:29:43,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:43,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123812674] [2020-12-22 05:29:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:43,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123812674] [2020-12-22 05:29:43,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:43,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:29:43,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441716061] [2020-12-22 05:29:43,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:29:43,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:29:43,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:29:43,893 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:29:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:43,920 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-22 05:29:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:29:43,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:29:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:43,923 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:29:43,923 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:29:43,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:29:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:29:43,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:29:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:29:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:29:43,931 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 05:29:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:43,932 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:29:43,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:29:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:29:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:29:43,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:43,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:43,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:29:43,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:43,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-22 05:29:43,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:43,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591737665] [2020-12-22 05:29:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:44,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591737665] [2020-12-22 05:29:44,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:44,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:29:44,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672779096] [2020-12-22 05:29:44,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:29:44,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:44,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:29:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:29:44,038 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:29:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:44,152 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-22 05:29:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:29:44,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:29:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:44,155 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:29:44,155 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:29:44,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:29:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:29:44,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:29:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:29:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:29:44,164 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-22 05:29:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:44,165 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:29:44,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:29:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:29:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:29:44,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:44,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:44,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:29:44,166 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-22 05:29:44,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:44,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174347149] [2020-12-22 05:29:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:44,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:44,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140147666] [2020-12-22 05:29:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:44,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:29:44,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:44,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174347149] [2020-12-22 05:29:44,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:44,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140147666] [2020-12-22 05:29:44,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:44,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:29:44,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505359430] [2020-12-22 05:29:44,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:29:44,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:44,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:29:44,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:29:44,431 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-22 05:29:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:44,797 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-22 05:29:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:29:44,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:29:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:44,800 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:29:44,800 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:29:44,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:29:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:29:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-22 05:29:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:29:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-22 05:29:44,811 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-22 05:29:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:44,811 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-22 05:29:44,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:29:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-22 05:29:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:29:44,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:44,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:45,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:45,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:45,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-22 05:29:45,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:45,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729745701] [2020-12-22 05:29:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:45,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:45,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280813543] [2020-12-22 05:29:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:45,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:29:45,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:45,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729745701] [2020-12-22 05:29:45,348 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:45,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280813543] [2020-12-22 05:29:45,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:45,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:29:45,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561998746] [2020-12-22 05:29:45,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:29:45,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:29:45,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:29:45,351 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-22 05:29:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:45,811 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-22 05:29:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:29:45,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:29:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:45,818 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:29:45,818 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:29:45,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:29:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:29:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:29:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:29:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 05:29:45,839 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-22 05:29:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:45,839 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 05:29:45,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:29:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 05:29:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:29:45,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:45,840 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:46,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:46,054 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:46,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-22 05:29:46,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:46,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167766280] [2020-12-22 05:29:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:46,070 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:46,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75628945] [2020-12-22 05:29:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:46,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:29:46,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:46,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167766280] [2020-12-22 05:29:46,229 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:46,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75628945] [2020-12-22 05:29:46,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:46,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:29:46,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390092642] [2020-12-22 05:29:46,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:29:46,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:29:46,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:29:46,238 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-22 05:29:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:46,286 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-22 05:29:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:29:46,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:29:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:46,291 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:29:46,291 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 05:29:46,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:29:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 05:29:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 05:29:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 05:29:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 05:29:46,315 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-22 05:29:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:46,316 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 05:29:46,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:29:46,316 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 05:29:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:29:46,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:46,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:46,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:46,519 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-22 05:29:46,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:46,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568174060] [2020-12-22 05:29:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:46,534 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:46,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941566992] [2020-12-22 05:29:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:46,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 05:29:46,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:46,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568174060] [2020-12-22 05:29:46,871 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:46,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941566992] [2020-12-22 05:29:46,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:46,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:29:46,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079980923] [2020-12-22 05:29:46,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:29:46,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:46,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:29:46,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:29:46,874 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-22 05:29:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:47,394 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-22 05:29:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:29:47,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-22 05:29:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:47,396 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:29:47,396 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 05:29:47,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:29:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 05:29:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-22 05:29:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:29:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-22 05:29:47,403 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-22 05:29:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:47,404 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-22 05:29:47,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:29:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-22 05:29:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:29:47,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:47,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:47,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:47,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:47,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-22 05:29:47,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:47,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092215513] [2020-12-22 05:29:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:47,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:47,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50266245] [2020-12-22 05:29:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:47,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:29:47,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:47,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092215513] [2020-12-22 05:29:47,864 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:47,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50266245] [2020-12-22 05:29:47,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:47,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:29:47,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295190477] [2020-12-22 05:29:47,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:29:47,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:29:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:29:47,866 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-22 05:29:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:50,226 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-22 05:29:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:29:50,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-22 05:29:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:50,228 INFO L225 Difference]: With dead ends: 74 [2020-12-22 05:29:50,228 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 05:29:50,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:29:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 05:29:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-22 05:29:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:29:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-22 05:29:50,237 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-22 05:29:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:50,237 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-22 05:29:50,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:29:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-22 05:29:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:29:50,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:50,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:50,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:50,439 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-22 05:29:50,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:50,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143515399] [2020-12-22 05:29:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:50,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:50,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293828339] [2020-12-22 05:29:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:50,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:29:50,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:50,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143515399] [2020-12-22 05:29:50,593 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:50,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293828339] [2020-12-22 05:29:50,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:50,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:29:50,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112340158] [2020-12-22 05:29:50,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:29:50,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:29:50,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:29:50,595 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-22 05:29:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:50,621 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-22 05:29:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:29:50,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:29:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:50,622 INFO L225 Difference]: With dead ends: 71 [2020-12-22 05:29:50,623 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:29:50,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:29:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:29:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-22 05:29:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:29:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-22 05:29:50,631 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-22 05:29:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:50,631 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-22 05:29:50,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:29:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-22 05:29:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:29:50,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:50,633 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:50,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:50,847 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:50,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-22 05:29:50,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:50,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022970618] [2020-12-22 05:29:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:50,861 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:50,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537702670] [2020-12-22 05:29:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:50,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:29:50,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:50,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022970618] [2020-12-22 05:29:50,990 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:50,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537702670] [2020-12-22 05:29:50,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:50,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:29:50,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691310927] [2020-12-22 05:29:50,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:29:50,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:50,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:29:50,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:29:50,996 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-22 05:29:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:51,043 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-22 05:29:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:29:51,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-22 05:29:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:51,048 INFO L225 Difference]: With dead ends: 94 [2020-12-22 05:29:51,048 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:29:51,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:29:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:29:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 05:29:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:29:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-22 05:29:51,071 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-22 05:29:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:51,071 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-22 05:29:51,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:29:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-22 05:29:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:29:51,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:51,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:51,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:51,275 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-22 05:29:51,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:51,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526541673] [2020-12-22 05:29:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:51,288 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:51,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853581341] [2020-12-22 05:29:51,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:51,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:51,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:51,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:29:51,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:51,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526541673] [2020-12-22 05:29:51,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:51,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853581341] [2020-12-22 05:29:51,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:51,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:29:51,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730041317] [2020-12-22 05:29:51,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:29:51,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:29:51,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:29:51,929 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-22 05:29:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:53,103 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-22 05:29:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:29:53,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-22 05:29:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:53,105 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:29:53,105 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 05:29:53,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:29:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 05:29:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-22 05:29:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 05:29:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-22 05:29:53,114 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-22 05:29:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:53,114 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-22 05:29:53,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:29:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-22 05:29:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:29:53,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:53,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:53,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:29:53,320 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-22 05:29:53,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:53,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915733607] [2020-12-22 05:29:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:53,341 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:53,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750829152] [2020-12-22 05:29:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:57,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:29:57,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:57,954 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:29:58,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:29:58,027 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:29:58,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:29:58,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:29:58,990 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:00,577 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:02,382 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:04,251 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:06,311 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:07,484 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:08,406 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:09,400 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:10,957 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:12,307 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:13,489 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:14,806 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:15,723 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:19,450 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:24,006 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:29,116 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:36,479 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:49,045 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:31:09,179 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:31:12,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915733607] [2020-12-22 05:31:12,279 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:12,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750829152] [2020-12-22 05:31:12,279 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 05:31:12,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:12,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:31:12,280 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:31:12,280 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:31:12,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:12,507 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:31:12,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:31:12 BoogieIcfgContainer [2020-12-22 05:31:12,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:31:12,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:31:12,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:31:12,509 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:31:12,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:29:43" (3/4) ... [2020-12-22 05:31:12,513 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:31:12,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:31:12,515 INFO L168 Benchmark]: Toolchain (without parser) took 90360.62 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 126.6 MB in the beginning and 134.6 MB in the end (delta: -8.0 MB). Peak memory consumption was 121.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:12,516 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:31:12,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:12,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:12,517 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:12,519 INFO L168 Benchmark]: RCFGBuilder took 578.31 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 96.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:12,520 INFO L168 Benchmark]: TraceAbstraction took 89410.92 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 96.2 MB in the beginning and 134.9 MB in the end (delta: -38.7 MB). Peak memory consumption was 139.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:12,521 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 280.0 MB. Free memory was 134.9 MB in the beginning and 134.6 MB in the end (delta: 297.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:31:12,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 578.31 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 96.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 89410.92 ms. Allocated memory was 151.0 MB in the beginning and 280.0 MB in the end (delta: 129.0 MB). Free memory was 96.2 MB in the beginning and 134.9 MB in the end (delta: -38.7 MB). Peak memory consumption was 139.1 MB. Max. memory is 8.0 GB. * Witness Printer took 4.74 ms. Allocated memory is still 280.0 MB. Free memory was 134.9 MB in the beginning and 134.6 MB in the end (delta: 297.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 89.3s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 632 SolverSat, 126 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...